A voltage indicator for mounting on a power cord (FIG. 3) for indicating the presence or absence of a single-phase AC voltage potential on a monitored power cord for a grounded AC power distribution system. The indicator comprises; a housing (16,18), an electronic display (10), a static suppression resistor...http://www.google.com/patents/US7893686?utm_source=gb-gplus-sharePatent US7893686 - Power cord voltage indicator
